A behavioural assessment measures a broad range of problem behaviours. It examines whether a child's behaviour falls outside the age-appropriate range. Behaviours measured may include attention problems, hyperactivity, aggression, anxiety, depression, social problems, somatic problems, and conduct problems.

A behavioural assessment is used to:

• diagnose problem behaviours (e.g. attention deficit hyperactivity disorder, oppositional defiant disorder, and conduct disorder)

• identify mood problems (e.g. anxiety and depression)

• identify social problems

• understand behaviours that may be impacting a child's functioning at home and school

• help develop a behaviour management plan at school, and guide parenting strategies at home

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Behavioural assessment tools:​

• Conners – Fourth Edition (Conners-4)

• Conners Comprehensive Behaviour Rating Scales (Conners-CBRS)

• Conners Early Childhood (Conners-EC)

• Child Behavior Checklist (CBCL)

• Behavioural Assessment System of Children – Third Edition (BASC-3)